js判断是电脑访问手机版网站，跳转到电脑版

function uaredirect(murl,wurl){   //murl为手机网站域名，wurl为电脑版网站域名地址
    try {
    if(document.getElementById("bdmark") != null){
    return;
    }
    var urlhash = window.location.hash;
    if (!urlhash.match("from<a href="https://www.aaym.net/tag/a" style="color:#29b6f6">app</a>")){
    if ((<a href="https://www.aaym.net/tag/nu" style="color:#29b6f6">navigator.userAgent</a>.match(/(iPhone|iPod|Android|ios|iPad)/i))) {
      //location.replace(murl);
    }else{
      location.replace(wurl);
    }
    }
    } catch(err){}
    }

 82 uaredirect("http://m.xxx.com","http://www.xxx.com");